/*
 * Copyright (c) 2023, 2023, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package com.oracle.svm.jdwp.resident;

import com.oracle.svm.core.thread.PlatformThreads;
import com.oracle.svm.core.thread.ThreadStatus;

public enum JDWPThreadStatus {

    ZOMBIE(0),
    RUNNING(1),
    SLEEPING(2),
    MONITOR(3),
    WAIT(4),
    NOT_STARTED(5);

    public final int value;

    JDWPThreadStatus(int value) {
        this.value = value;
    }

    public static int getThreadStatus(Thread thread) {
        int state = PlatformThreads.getThreadStatus(thread);
        JDWPThreadStatus status = switch (state) {
            case ThreadStatus.NEW -> NOT_STARTED;
            case ThreadStatus.BLOCKED_ON_MONITOR_ENTER -> MONITOR;
            case ThreadStatus.IN_OBJECT_WAIT, ThreadStatus.IN_OBJECT_WAIT_TIMED, ThreadStatus.PARKED, ThreadStatus.PARKED_TIMED -> WAIT;
            case ThreadStatus.SLEEPING -> SLEEPING;
            case ThreadStatus.TERMINATED -> ZOMBIE;
            default -> RUNNING;
        };
        return status.value;
    }
}
